PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-23:57:40
G01     311.0          31.4                7.4 +/-    1.51      12.7 +/-    1.51  0.100 / 0.130
G10     100.1          42.1                8.9 +/-    0.90      12.6 +/-    0.90  0.080 / 0.100
G11     289.8          26.2                6.9 +/-    1.78      13.1 +/-    1.78  0.040 / 0.040
G14     334.4          69.7                7.1 +/-    0.59       7.6 +/-    0.59  0.040 / 0.040
G18     285.8          49.1                4.2 +/-    4.61       5.4 +/-    4.61  0.050 / 0.070
G20     117.3          17.1                9.2 +/-    1.13      21.7 +/-    1.13  0.060 / 0.080
G22     307.6          19.7                5.7 +/-    2.10      12.6 +/-    2.10  0.030 / 0.030
G25     89.0           14.3                8.4 +/-    2.56      21.2 +/-    2.56  0.030 / 0.040
G31     168.2          59.4                9.9 +/-    0.82      11.2 +/-    0.82  0.070 / 0.210
G32     30.2           56.4                7.4 +/-    1.06       8.7 +/-    1.06  0.100 / 0.200